Microwave and Millimeter Wave Nondestructive

Testing and Evaluation (NDT&E)

Microwave and millimeter-wave signals span the frequency range of ~300 MHz to 300 GHz, corresponding to a wavelength range of 1000 mm to 1 mm. Signals at these frequencies can easily penetrate inside dielectric materials and composites, and interact with their inner structures. The relatively small wavelengths and wide bandwidths associated with these signals enable the production of high spatial-resolution images of materials and structures.

When used for NDT&E, these innovative techniques effectively address a myriad of important inspection concerns, including the following: